Wall-hugger adjustable bed with power fan system

ABSTRACT

An adjustable bed system includes a first frame structure; a second frame structure disposed on and moveably coupled to the first frame structure; a back lifting assembly; a leg lifting assembly; and a plurality of fans coupled with platforms for operably providing air circulation in bed surrounding. The back lifting assembly comprises a back lifting bracket pivotally connected to the second frame structure, and a back lifting actuator pivotally connected between the back lifting bracket and the first frame structure for operably driving the back lifting bracket to pivotally move in an upward or downward rotating direction. The leg lifting assembly comprises a leg lifting bracket pivotally coupled to the first frame structure, and a leg lifting actuator pivotally connected between the leg lifting bracket and the second frame structure for operably driving the leg lifting bracket to pivotally move in an upward or downward rotating direction.

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS

This application claims priority to and the benefit of U.S. Provisional Patent Application Ser. No. 62/889,127, filed Aug. 20, 2019, which is incorporated herein in its entirety by reference.

This application is also a continuation-in-part application of U.S. patent application Ser. No. 16/732,826, filed Jan. 2, 2020, which itself claims priority to and the benefit of U.S. Provisional Patent Application Ser. No. 62/790,583, filed Jan. 10, 2019, which are incorporated herein in their entireties by reference.

FIELD OF THE INVENTION

The invention generally relates to a bed, and more particular to adjustable bed systems with fans.

BACKGROUND OF THE INVENTION

Sleep is critical for people in every aspect of their lives. Thus, it is beneficial and desirable for people to have a bedding system that is capable of adjusting body positions and bed temperature based on user's sleep preference, so that the user achieves maximum comfort during sleep.

SUMMARY OF THE INVENTION

In one aspect, the invention relates to an adjustable bed system. In one embodiment, the adjustable bed system includes a first frame structure; a second frame structure disposed on and moveably coupled to the first frame structure; a back lifting assembly; a leg lifting assembly; a plurality of platforms; and a plurality of fans coupled with the plurality of platforms and adapted for operably providing air circulation in surrounding of the adjustable bed system.

The back lifting assembly comprises a back lifting bracket pivotally connected to the second frame structure, and a back lifting actuator pivotally connected between the back lifting bracket and the first frame structure for operably driving the back lifting bracket to pivotally move in an upward rotating direction or a downward rotating direction relative to one of the first frame structure and the second frame structure.

The leg lifting assembly comprises a leg lifting bracket pivotally coupled to the first frame structure, and a leg lifting actuator pivotally connected between the leg lifting bracket and the second frame structure for operably driving the leg lifting bracket to pivotally move in an upward rotating direction or a downward rotating direction relative to the one of the first frame structure and the second frame structure.

The plurality of platforms is coupled with the first frame structure, the second frame structure, the back lifting assembly and the leg lifting assembly, such that positions of at least one or more of the plurality of platforms are adjustable in accordance with operations of the back lifting assembly and the leg lifting assembly.

The plurality of fans is coupled with the plurality of platforms and adapted for operably providing air circulation in surrounding of the adjustable bed system.

In one embodiment, the first frame structure comprises two side rails transversely spaced and longitudinally extended and being parallel to each other, each side rail having an upper end and opposite, lower end; an upper rail and a lower rail longitudinally spaced and transversely extended, two ends of the upper rail connected to the upper ends of the two side rails and two ends of the lower rail connected to the lower ends of the two side rails such that the upper rail and the lower rail are parallel to each other; and a support member connected to each of the two side rails at a positon between the upper end and the lower end of said side rail.

In one embodiment, the second frame structure comprises two side rails transversely spaced and longitudinally extended and being parallel to each other, each side rail having two spaced-apart, vertical posts downwards extended into and moveably coupled to a respective one of the two side rails of the first frame structure; and an upper rail, an intermediate rail and a lower rail connected to the two side rails at an upper portion, an intermediate portion and a lower portion of the two side rails, respectively.

In one embodiment, for each side rail of the second frame structure, the two spaced-apart, vertical posts are located respectively at an upper end portion and a lower end portion of said side rail.

In one embodiment, the vertical post located at the lower end portion of said side rail is moveable in the respective one of the two side rails of the first frame structure between the support member and the lower end of the respective one of the two side rails of the first frame structure.

In one embodiment, each vertical post comprises a roller attached onto its lower end, the roller being received and moveable in one of the two side rails of the first frame structure.

In one embodiment, each of the two side rails of the first frame structure is formed of a C-shape steel for receiving the rollers of the two spaced-apart, vertical posts.

In one embodiment, the back lifting bracket comprises a middle bar and a pair of swing arms. The pair of swing arms is transversely spaced and longitudinally extended, and rigidly connected to ends of the transversely extending middle bar. Each of the pair of swing arms has a first end portion and an opposite, second end portion. The first end portions of the pair of swing arms are pivotally connected to the upper end portion of the two side rails of the second frame structure, respectively.

The back lifting actuator comprises a motor member, an outer tube extending from the motor member, and an activation rod having a first end portion received in the outer tube and an opposite, second end portion. The activation rod is engaged with the motor member and configured to be telescopically movable relative to said outer tube according to a direction of motor rotation. The motor member is pivotally connected to the support member of the first frame structure, and the second end portion of the activation rod pivotally connected to the middle bar of the back lifting bracket. Alternatively, the motor member is pivotally connected to the middle bar of the back lifting bracket, and the second end portion of the activation rod pivotally connected to the support member of the first frame structure.

In one embodiment, the leg lifting bracket comprises a middle bar and a pair of swing arms. The pair of swing arms is transversely spaced and longitudinally extended, and rigidly connected to ends of the transversely extending middle bar. Each of the pair of swing arms has a first end portion and an opposite, second end portion. The first end portions of the pair of swing arms are disposed and moveable on the support member of the first frame structure.

The leg lifting actuator comprises a motor member, an outer tube extending from the motor member, and an activation rod having a first end portion received in the outer tube and an opposite, second end portion. The activation rod is engaged with the motor member and configured to be telescopically movable relative to said outer tube according to a direction of motor rotation. The motor member is pivotally connected to the intermediate rail of the second frame structure, and the second end portion of the activation rod pivotally connected to the middle bar of the leg lifting bracket. Alternatively, the motor member is pivotally connected to the middle bar of the leg lifting bracket, and the second end portion of the activation rod pivotally connected to the intermediate rail of the second frame structure.

In one embodiment, the first end portion of each swing arm of the leg lifting bracket is equipped with a leg lifting wheel that is operably rotatable on the support member of the first frame structure.

In one embodiment, one or more of the plurality of platforms have a plurality of openings, and wherein the plurality of fans is mounted onto said one or more platforms such that each of the plurality of openings accommodates a respective fan of the plurality of fans.

In one embodiment, the plurality of platforms comprises a back platform mounted on the back lifting bracket, such that the back platform is rotatable around a lower side of the back platform in a back platform forward direction or a back platform backward direction; a seat platform mounted on the two side rails of the second frame structure; a thigh platform mounted on the leg lifting bracket with an upper side being hinged with a lower side of the seat platform through a first hinge, such that the thigh platform is rotatable around a rotating axis of the first hinge in a thigh platform forward direction or a thigh platform backward direction; and a leg platform with an upper side of the leg platform being hinged with a lower side of the thigh platform through a second hinge, such that the leg platform is rotatable around a rotating axis of the second hinge.

In one embodiment, the adjustable bed system further comprises a pair of back support tubes, each back support tubes having a first end pivotally connected to the upper rail of the first frame structure through a bracket, and an opposite, second end pivotally connected to the back platform.

In one embodiment, the adjustable bed system further comprises a pair of leg support tubes, each leg support tubes having a first end pivotally connected to the lower rail of the second frame structure through a bracket, and an opposite, second end pivotally connected to the leg platform.

In one embodiment, the adjustable bed system further comprises a controller configured to control operations of the back lifting actuator, the leg lifting actuator and the plurality of fans, respectively.

These and other aspects of the invention will become apparent from the following description of the preferred embodiment taken in conjunction with the following drawings, although variations and modifications therein may be affected without departing from the spirit and scope of the novel concepts of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings illustrate one or more embodiments of the invention and, together with the written description, serve to explain the principles of the invention. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment.

FIG. 1 shows schematically a front perspective view of an adjustable bed system in a flat state according to one embodiment of the invention.

FIG. 2 shows schematically a front perspective view of the adjustable bed system shown in FIG. 1 in a lift state.

FIG. 3 shows schematically a front perspective view of the adjustable bed system shown in FIG. 1 in the lift state.

FIG. 4 shows schematically a rear perspective view of the adjustable bed system shown in FIG. 1 in the flat state.

FIG. 5 shows schematically a rear perspective view of the adjustable bed system shown in FIG. 1 in the lift state.

FIG. 6 shows schematically a cross-sectional view of the adjustable bed system shown in FIG. 1 in the lift state.

FIG. 7 shows schematically a fan according to one embodiment of the invention.

FIG. 8 shows schematically a control system according to one embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the present invention are shown. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout.

The terms used in this specification generally have their ordinary meanings in the art, within the context of the invention, and in the specific context where each term is used. Certain terms that are used to describe the invention are discussed below, or elsewhere in the specification, to provide additional guidance to the practitioner regarding the description of the invention. For convenience, certain terms may be highlighted, for example using italics and/or quotation marks. The use of highlighting and/or capital letters has no influence on the scope and meaning of a term; the scope and meaning of a term are the same, in the same context, whether or not it is highlighted and/or in capital letters. It will be appreciated that the same thing can be said in more than one way. Consequently, alternative language and synonyms may be used for any one or more of the terms discussed herein, nor is any special significance to be placed upon whether or not a term is elaborated or discussed herein. Synonyms for certain terms are provided. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification, including examples of any terms discussed herein, is illustrative only and in no way limits the scope and meaning of the invention or of any exemplified term. Likewise, the invention is not limited to various embodiments given in this specification.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be understood that when an element is referred to as being “on,” “attached” to, “connected” to, “coupled” with, “contacting,” etc., another element, it can be directly on, attached to, connected to, coupled with or contacting the other element or intervening elements may also be present. In contrast, when an element is referred to as being, for example, “directly on,” “directly attached” to, “directly connected” to, “directly coupled” with or “directly contacting” another element, there are no intervening elements present. It will also be appreciated by those of skill in the art that references to a structure or feature that is disposed “adjacent” to another feature may have portions that overlap or underlie the adjacent feature.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below can be termed a second element, component, region, layer or section without departing from the teachings of the present invention.

Furthermore, relative terms, such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element's relationship to another element as illustrated in the figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on the “upper” sides of the other elements. The exemplary term “lower” can, therefore, encompass both an orientation of lower and upper, depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The exemplary terms “below” or “beneath” can, therefore, encompass both an orientation of above and below.

It will be further understood that the terms “comprise(s)” and/or “comprising,” or “include(s)” and/or “including” or “has (have)” and/or “having” or “contain(s)” and/or “containing” when used in this specification specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, “around,” “about,” “substantially” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the terms “around,” “about,” “substantially” or “approximately” can be inferred if not expressly stated.

As used in this specification, the phrase “at least one of A, B, and C” should be construed to mean a logical (A or B or C), using a non-exclusive logical OR. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.

The description below is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. The broad teachings of the invention can be implemented in a variety of forms. Therefore, while this invention includes particular examples, the true scope of the invention should not be so limited since other modifications will become apparent upon a study of the drawings, the specification, and the following claims. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. It should be understood that one or more steps within a method may be executed in different order (or concurrently) without altering the principles of the invention.

The description will be made as to the embodiments of the invention in conjunction with the accompanying drawings in FIGS. 1-8. In accordance with the purposes of this invention, as embodied and broadly described herein, this invention, in one aspect, relates to a wall-hugger adjustable bed system with fans.

Referring to FIGS. 1-8, and particularly to FIGS. 3-4, the wall-hugger adjustable bed system 100 includes a first frame structure 110; a second frame structure 120 disposed on and moveably coupled to the first frame structure 110; a back lifting assembly 130; a leg lifting assembly 140; a plurality of platforms 161-164; and a plurality of fans 170. The term “platform” used herein refers to a bed board or board.

The first frame structure 110 comprises two side rails 10 a and 10 b transversely spaced and longitudinally extended and being parallel to each other. Each side rail 10 a or 10 b has an upper end and opposite, lower end. In some embodiments, each side rail 10 a or 10 b is formed of a C-shape steel. In other embodiments, each side rail 10 a or 10 b is formed to have a trough or groove.

The first frame structure 110 also comprises an upper rail 10 c and a lower rail 10 d longitudinally spaced and transversely extended, where two ends of the upper rail 10 c are connected to the upper ends of the two side rails 10 a and 10 b and two ends of the lower rail 10 d are connected to the lower ends of the two side rails 10 a and 10 b such that the upper rail 10 c and the lower rail 10 d are parallel to each other.

The first frame structure 110 further comprises a support member 15 connected to each of the two side rails 10 a and 10 b at a positon between the upper end and the lower end of said side rail 10 a or 10 b. In some embodiments, the support member 15 includes a transversely-aligned bar 15 c connected to the two side rails 10 a and 10 b, and two longitudinally-aligned support arms 15 a and 15 b spaced-apart connected to the transversely-aligned bar 15 c.

The first frame structure 110 also includes two vertical posts 10 e formed respectively on the two ends of the upper rail 10 c, for supporting the back platform 161 when the adjustable bed system 100 is in a flat state.

In some embodiments, the connections between the two side rails 10 a and 10 b and the upper rail 10 c, the lower rail 10 d and the support member 15 are preferably by welding means. In addition to the welding means, other securing/connecting means, such as screwing means, mating connections, etc., can also be utilized to practice the invention.

The second frame structure 120 comprises two side rails 20 a and 20 b transversely spaced and longitudinally extended and being parallel to each other, and an upper rail 21, an intermediate rail 22 and a lower rail 23 connected to the two side rails 20 a and 20 b at an upper portion, an intermediate portion and a lower portion of the two side rails 20 a and 20 b, respectively.

Each side rail 20 a or 20 b of the second frame structure 120 has two spaced-apart, vertical posts 24 downwards extended into and moveably coupled to a respective one of the two side rails 10 a and 10 b of the first frame structure 110. For each side rail 20 a or 20 b of the second frame structure 120, the two spaced-apart, vertical posts 24 are located respectively at an upper end portion and a lower end portion of said side rail 20 a or 20 b. The vertical post 24 located at the lower end portion of said side rail 20 a or 20 b is moveable in the respective one of the two side rails 10 a and 10 b of the first frame structure 110 between the support member 15 and the lower end of the respective one of the two side rails 10 a and 10 b of the first frame structure 110. In some embodiments, the lower rail 23 is connected to the two vertical post 24 located at the lower end portions of the two side rail 20 a or 20 b. As such, during motion of the second frame structure 120 in the first frame structure 110 towards the front end portion of the two side rails 10 a and 10 b, the second frame structure 120 stops from moving when the lower rail 23 moves against the support member 15, and particularly against one ends of the two longitudinally-aligned support arms 15 a and 15 b.

In some embodiments, the lower end of each vertical post 24 is equipped with a roller 25. As assembled, the roller 25 is received and moveable in one of the two side rails 10 a and 10 b of the first frame structure 110. For example, the roller 25 is received and moveable in the C-shape steel, or the troughs/grooves of two side rails 10 a and 10 b.

The back lifting assembly 130 comprises a back lifting bracket 135 pivotally connected to the second frame structure 120, and a back lifting actuator 132 pivotally connected between the back lifting bracket 135 and the first frame structure 110 for operably driving the back lifting bracket 135 to pivotally move in an upward rotating direction or a downward rotating direction relative to one of the first frame structure 110 and the second frame structure 120.

The back lifting bracket 135 comprises a middle bar 35 and a pair of swing arms 35 a and 35 b. The pair of swing arms 35 a and 35 b is transversely spaced and longitudinally extended, and rigidly connected to ends of the transversely extending middle bar 35. Each of the pair of swing arms 35 a and 35 b has a first end portion and an opposite, second end portion. The first end portions of the pair of swing arms 35 a and 35 b are pivotally connected to the upper end portion of the two side rails 20 a and 20 b of the second frame structure 120, respectively. In one embodiment, the back lifting bracket 135 with the middle bar 35 and the pair of swing arms 35 a and 35 b are formed in an H-shape form or a U-shape form. Other designs of the back lifting bracket 135 can also be utilized to practice the invention.

The back lifting actuator 132 comprises a motor member 32, an outer tube 32 a extending from the motor member 32, and an activation rod 32 b having a first end portion received in the outer tube 32 a and an opposite, second end portion. The activation rod 32 b is engaged with the motor member 32 and configured to be telescopically movable relative to said outer tube 32 a according to a direction of motor rotation. In the exemplary embodiment shown in FIGS. 3-5, the motor member 32 is pivotally connected to the support member 15 of the first frame structure 110 through a bracket 32 d mounted to the transversely-aligned bar 15 c of the support member 15, and the second end portion of the activation rod 32 b pivotally connected to the middle bar 35 of the back lifting bracket 135 a bracket 32 c mounted to the middle bar 35. In another embodiment, the motor member 32 is pivotally connected to the middle bar 35 of the back lifting bracket 135, and the second end portion of the activation rod 32 b pivotally connected to the support member 15 of the first frame structure 110.

The leg lifting assembly 140 comprises a leg lifting bracket 145 pivotally coupled to the first frame structure 110, and a leg lifting actuator 142 pivotally connected between the leg lifting bracket 145 and the second frame structure 120 for operably driving the leg lifting bracket 145 to pivotally move in an upward rotating direction or a downward rotating direction relative to the one of the first frame structure 110 and the second frame structure 120.

The leg lifting bracket 145 comprises a middle bar 45 and a pair of swing arms 45 a and 45 b. The pair of swing arms 45 a and 45 b is transversely spaced and longitudinally extended, and rigidly connected to ends of the transversely extending middle bar 45. Each of the pair of swing arms 45 a and 45 b has a first end portion and an opposite, second end portion. The first end portions of the pair of swing arms 45 a and 45 b are disposed and moveable on the support member 15 of the first frame structure 110. In one embodiment, the first end portion of each swing arm 45 a or 45 b of the leg lifting bracket 145 is equipped with a leg lifting wheel 44 that is operably rotatable on one of the two longitudinally-aligned support arms 15 a and 15 b of the support member 15 of the first frame structure 110.

The leg lifting actuator 142 comprises a motor member 42, an outer tube 42 a extending from the motor member 42, and an activation rod 42 b having a first end portion received in the outer tube 42 a and an opposite, second end portion. The activation rod 42 b is engaged with the motor member 42 and configured to be telescopically movable relative to said outer tube 42 a according to a direction of motor rotation. In the exemplary embodiment shown in FIGS. 3-5, the motor member 42 is pivotally connected to the intermediate rail 22 of the second frame structure 120 through a bracket 42 d mounted to the intermediate rail 22, and the second end portion of the activation rod 32 b pivotally connected to the middle bar 45 of the leg lifting bracket 145 through a bracket 42 c mounted to the middle bar 45. In another embodiment, the motor member 42 is pivotally connected to the middle bar 45 of the leg lifting bracket 145, and the second end portion of the activation rod 42 b pivotally connected to the intermediate rail 22 of the second frame structure 120.

In some embodiments, each of the motor members 32 and 42 includes a linear actuator.

The plurality of platforms 161-164 is coupled with the first frame structure 110, the second frame structure 120, the back lifting assembly 130 and the leg lifting assembly 140, such that positions of at least one or more of the plurality of platforms 161-164 are adjustable in accordance with operations of the back lifting assembly 130 and the leg lifting assembly 140.

In the exemplary embodiment shown in FIGS. 1, 2 and 6, the plurality of platforms 161-164 comprises a back platform 161, a seat platform 162, a thigh platform 163 and a leg platform 164, arranged in sequence from the upper side (i.e., near the upper rail 10 c) to the lower side (i.e., near the lower rail 10 c) of the adjustable bed system 100.

The back platform 161 is mounted on the back lifting bracket 135, such that the back platform 161 is operably rotatable around a lower side of the back platform 161 in a back platform forward direction (i.e., from a laid back or flat state to a lift state) or a back platform backward direction (i.e., from a lift state to a laid back or flat state). The seat platform 162 is mounted and fixed on the two side rails 20 a and 20 b of the second frame structure 120. The thigh platform 163 is mounted on the leg lifting bracket 145 with an upper side being hinged with a lower side of the seat platform 162 through a first hinge 165, such that the thigh platform 163 is operably rotatable around a rotating axis of the first hinge 165 in a thigh platform forward direction (i.e., from a laid back state to a lift state) or a thigh platform backward direction (i.e., from a lift state to a laid back state). The leg platform 164 with an upper side of the leg platform 164 being hinged with a lower side of the thigh platform 163 through a second hinge 166, such that the leg platform 166 is operably rotatable around a rotating axis of the second hinge 166.

In addition, the back lifting assembly 130 may also include a pair of back support tubes 51 for providing support to the back platform 161 when the adjustable be system 100 is in a lift state. Each back support tubes 55 has a first end pivotally connected to the upper rail 10 c of the first frame structure 110 through a bracket 51 a, and an opposite, second end pivotally connected to the back platform 161.

In one embodiment, the leg lifting assembly 140 also includes a pair of leg support tubes 55 for providing support to the leg platform 164 when the adjustable be system 100 is in a lift state, each leg support tubes 55 having a first end pivotally connected to the lower rail 23 of the second frame structure 120 through a bracket 55 a, and an opposite, second end pivotally connected to the leg platform 164.

In some embodiments, one or more of the plurality of platforms 161-164 have a plurality of openings. In the exemplary embodiment shown in FIGS. 1, 2 and 4-6, the back platform 161 has two openings, each of the seat platform 162 and the leg platform 36 has one opening. It should be noted that other arrangement of locations of the holes/openings can be also employed to practice the invention.

The plurality of fans 170 is mounted onto said one or more platforms 161-164 such that each of the plurality of openings accommodates a respective fan of the plurality of fans 170. Each of the plurality of fans 170 is adapted for operably providing air circulation in surrounding of the adjustable bed system 100. The air can be room temperature air, cooling air or heating air.

In one embodiment shown in FIG. 7, each of the fans 170 may include a fan motor assembly 172, a first fan cover 171, a second fan cover 173 and a plurality of mounting members. The first fan cover 171 and the second fan cover 173 cover two sides of the fan motor assembly 172 for protection. The plurality of mounting members mount the fan motor assembly 172, the first fan cover 171 and the second fan cover 173 to one of the back platform 161, the seat platform 162, the thigh platform 163 and the leg platform 164. In one embodiment, the plurality of mounting members are screws. Each of the fans 170 is configured such that in operation, air is flown from the rear side of said fan to a mattress not shown disposed on the plurality of platforms 170. The air can be room temperature air, cooling air or heating air.

The adjustable bed system 100 further includes a controlling system 180, which in one embodiment shown in FIG. 8, includes a controller 183 configured to control operations of the back lifting actuator 132, the leg lifting actuator 142 and the plurality of fans 170, respectively, so as to lift individually or cooperatively the back platform 161, the thigh platform 163, and the leg platform 164 in desired positions, and to provide air and/or circulation, which can be room temperature air, cooling air or heating air. In one embodiment shown in FIG. 8, the control system 180 includes a power cord 181, a power supply 182, a control box 183, a plurality of connecting cables 184-185, LED lights 186 and USB ports 187. The control box 183 is powered by the power supply 182 which is in turn connected to any power source via the power cord 181. The fans 170, the back lifting motor member 32 and the leg lifting motor member 42 are connected to the control box 183 via the plurality of connection cables e.g., the connecting cable 184. In this way, the user can adjust the bed position and air flow strength of each cooling fan system. Alternatively, LED lights 186 can be employed to indicate the working conditions of the fans 170, the back lifting motor 32 and the leg lifting motor 42. For example, when one of the cooling fan system 170 is working, the corresponding one of the LED lights 186 is turned on and emits green light. The USB ports 187 are set for interfacing with the control box 183 by the user when needed.

According to the invention, the wall-hugger adjustable bed system with power fans has at least following benefits.

All the bed components (i.e., the back lifting assembly 130, the leg lifting assembly 140, the platforms 161-164 and mattress on the platforms) are coupled with the second (upper) frame structure 120, and the upper frame structure 120 is equipped with four rollers 25 that are received in the C-shape steel structure of the first (lower) frame structure 110. When the back lifting actuator 132 operably pushes the back lifting bracket 135 to rotate, the pulling force of the pair of back support tubes 51 causes the upper frame structure 120 to slide back and forth in the C-shaped steel of the lower frame structure 110 through the rollers 25, thereby realizing the forward or backward movement of the top portion (i.e., the back lifting assembly 130, the leg lifting assembly 140, the platforms 161-164 and mattress on the platforms) of the adjustable bed system 100.

The leg lifting assembly 130 is equipped with the rollers 44 that are moveably disposed on the roller support member 15, which in one embodiment is welded to the lower frame structure 110. Since the rollers 44 are supported by the support member 15, which increases the strength of the bed system, even if the bed system is subjected to force/stress, no deformation will occur.

Opening holes in the back platform 161, the seat platform 162, and the leg platform 164 of the bed system for mounting the fans, and the air flow of the fans can be adjusted according to the needs of the user.

The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching.

The embodiments were chosen and described in order to explain the principles of the invention and their practical application so as to enable others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the invention pertains without departing from its spirit and scope. Accordingly, the scope of the invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein. 

What is claimed is:
 1. An adjustable bed system, comprising: a first frame structure (110); a second frame structure (120) disposed on and moveably coupled to the first frame structure (110); a back lifting assembly (130) comprising a back lifting bracket (135) pivotally connected to the second frame structure (120), and a back lifting actuator (132) pivotally connected between the back lifting bracket (135) and the first frame structure (110) for operably driving the back lifting bracket (135) to pivotally move in an upward rotating direction or a downward rotating direction relative to one of the first frame structure (110) and the second frame structure (120); a leg lifting assembly (140) comprising a leg lifting bracket (145) pivotally coupled to the first frame structure (110), and a leg lifting actuator (142) pivotally connected between the leg lifting bracket (145) and the second frame structure (120) for operably driving the leg lifting bracket (145) to pivotally move in an upward rotating direction or a downward rotating direction relative to the one of the first frame structure (110) and the second frame structure (120); a plurality of platforms (161)-(164) coupled with the first frame structure (110), the second frame structure (120), the back lifting assembly (130) and the leg lifting assembly (140), such that positions of at least one or more of the plurality of platforms (161)-(164) are adjustable in accordance with operations of the back lifting assembly (130) and the leg lifting assembly (140); and a plurality of fans (170) coupled with the plurality of platforms (161)-(164) and adapted for operably providing air circulation in surrounding of the adjustable bed system.
 2. The adjustable bed system of claim 1, wherein the first frame structure (110) comprises: two side rails (10 a) and (10 b) transversely spaced and longitudinally extended and being parallel to each other, each side rail (10 a) or (10 b) having an upper end and opposite, lower end; an upper rail (10 c) and a lower rail (10 d) longitudinally spaced and transversely extended, two ends of the upper rail (10 c) connected to the upper ends of the two side rails (10 a) and (10 b) and two ends of the lower rail (10 d) connected to the lower ends of the two side rails (10 a) and (10 b) such that the upper rail (10 c) and the lower rail (10 d) are parallel to each other; and a support member (15) connected to each of the two side rails (10 a) and (10 b) at a positon between the upper end and the lower end of said side rail (10 a) or (10 b).
 3. The adjustable bed system of claim 2, wherein the second frame structure (120) comprises: two side rails (20 a) and (20 b) transversely spaced and longitudinally extended and being parallel to each other, each side rail (20 a) or (20 b) having two spaced-apart, vertical posts (24) downwards extended into and moveably coupled to a respective one of the two side rails (10 a) and (10 b) of the first frame structure (110); and an upper rail (21), an intermediate rail (22) and a lower rail (23) connected to the two side rails (20 a) and (20 b) at an upper portion, an intermediate portion and a lower portion of the two side rails (20 a) and (20 b), respectively.
 4. The adjustable bed system of claim 3, wherein for each side rail (20 a) or (20 b) of the second frame structure (120), the two spaced-apart, vertical posts (24) are located respectively at an upper end portion and a lower end portion of said side rail (20 a) or (20 b).
 5. The adjustable bed system of claim 4, wherein the vertical post (24) located at the lower end portion of said side rail (20 a) or (20 b) is moveable in the respective one of the two side rails (10 a) and (10 b) of the first frame structure (110) between the support member (15) and the lower end of the respective one of the two side rails (10 a) and (10 b) of the first frame structure (110).
 6. The adjustable bed system of claim 3, wherein each vertical post (24) comprises a roller (25) attached onto its lower end, the roller (25) being received and moveable in one of the two side rails (10 a) and (10 b) of the first frame structure (110).
 7. The adjustable bed system of claim 6, wherein each of the two side rails (10 a) and (10 b) of the first frame structure (110) is formed of a C-shape steel for receiving the rollers (25) of the two spaced-apart, vertical posts (24).
 8. The adjustable bed system of claim 3, wherein the back lifting bracket (135) comprises a middle bar (35) and a pair of swing arms (35 a) and (35 b), wherein the pair of swing arms (35 a) and (35 b) is transversely spaced and longitudinally extended, and rigidly connected to ends of the transversely extending middle bar (35), and each of the pair of swing arms (35 a) and (35 b) has a first end portion and an opposite, second end portion, wherein the first end portions of the pair of swing arms (35 a) and (35 b) are pivotally connected to the upper end portion of the two side rails (20 a) and (20 b) of the second frame structure (120), respectively; and the back lifting actuator (132) comprises a motor member (32), an outer tube (32 a) extending from the motor member (32), and an activation rod (32 b) having a first end portion received in the outer tube (32 a) and an opposite, second end portion, wherein the activation rod (32 b) is engaged with the motor member (32) and configured to be telescopically movable relative to said outer tube (32 a) according to a direction of motor rotation, wherein the motor member (32) is pivotally connected to the support member (15) of the first frame structure (110), and the second end portion of the activation rod (32 b) pivotally connected to the middle bar (35) of the back lifting bracket (135), or wherein the motor member (32) is pivotally connected to the middle bar (35) of the back lifting bracket (135), and the second end portion of the activation rod (32 b) pivotally connected to the support member (15) of the first frame structure (110).
 9. The adjustable bed system of claim 8, wherein the leg lifting bracket (145) comprises a middle bar (45) and a pair of swing arms (45 a) and (45 b), wherein the pair of swing arms (45 a) and (45 b) is transversely spaced and longitudinally extended, and rigidly connected to ends of the transversely extending middle bar (45), and each of the pair of swing arms (45 a) and (45 b) has a first end portion and an opposite, second end portion, wherein the first end portions of the pair of swing arms (45 a) and (45 b) are disposed and moveable on the support member (15) of the first frame structure (110); and the leg lifting actuator (142) comprises a motor member (42), an outer tube (42 a) extending from the motor member (42), and an activation rod (42 b) having a first end portion received in the outer tube (42 a) and an opposite, second end portion, wherein the activation rod (42 b) is engaged with the motor member (42) and configured to be telescopically movable relative to said outer tube (42 a) according to a direction of motor rotation, wherein the motor member (42) is pivotally connected to the intermediate rail (22) of the second frame structure (120), and the second end portion of the activation rod (32 b) pivotally connected to the middle bar (45) of the leg lifting bracket (145), or wherein the motor member (42) is pivotally connected to the middle bar (45) of the leg lifting bracket (145), and the second end portion of the activation rod (42 b) pivotally connected to the intermediate rail (22) of the second frame structure (120).
 10. The adjustable bed system of claim 9, wherein the first end portion of each swing arm (45 a) or (45 b) of the leg lifting bracket (145) is equipped with a leg lifting wheel (44) that is operably rotatable on the support member (15) of the first frame structure (110).
 11. The adjustable bed system of claim 9, wherein the plurality of platforms (161)-(164) comprises a back platform (161) mounted on the back lifting bracket (135), such that the back platform (161) is rotatable around a lower side of the back platform (161) in a back platform forward direction or a back platform backward direction; a seat platform (162) mounted on the two side rails (20 a) and (20 b) of the second frame structure (120); a thigh platform (163) mounted on the leg lifting bracket (145) with an upper side being hinged with a lower side of the seat platform (162) through a first hinge (165), such that the thigh platform (163) is rotatable around a rotating axis of the first hinge (165) in a thigh platform forward direction or a thigh platform backward direction; and a leg platform (164) with an upper side of the leg platform (164) being hinged with a lower side of the thigh platform (163) through a second hinge (166), such that the leg platform (166) is rotatable around a rotating axis of the second hinge (166).
 12. The adjustable bed system of claim 12, wherein the back lifting assembly (130) further comprises a pair of back support tubes (51), each back support tubes (55) having a first end pivotally connected to the upper rail (10 c) of the first frame structure (110), and an opposite, second end pivotally connected to the back platform (161).
 13. The adjustable bed system of claim 12, wherein the leg lifting assembly (140) further comprises a pair of leg support tubes (55), each leg support tubes (55) having a first end pivotally connected to the lower rail (23) of the second frame structure (120), and an opposite, second end pivotally connected to the leg platform (164).
 14. The adjustable bed system of claim 1, wherein one or more of the plurality of platforms (161)-(164) have a plurality of openings, and wherein the plurality of fans (170) is mounted onto said one or more platforms (161)-(164) such that each of the plurality of openings accommodates a respective fan of the plurality of fans (170).
 15. The adjustable bed system of claim 1, further comprising a controller (180) configured to control operations of the back lifting actuator (132), the leg lifting actuator (142) and the plurality of fans (170), respectively. 